Here is a list of issues that were fixed in this release - build PROD_2021_w26.

Issue Key Description
AVSUPPORT-58150 Anomaly engine ignored defined IP range exemption.
AVSUPPORT-65072 Email new phishing widgets now present content after confirmation, and audited (similar to download email).
AVSUPPORT-64983 In some cases it was impossible to select multiple users in daily digest scope configuration.
AVSUPPORT-64415 A customer experienced issues with users sync against O365, not all users were fetched.
AVSUPPORT-64343 In some cases emails were not bouncing back for non-existing addresses.
AVSUPPORT-62546 In some rare cases, scan data from stopped security engines was still showing.
AVSUPPORT-64255 Changed the behavior of links to the portal when login is required - post-login the user is directed to the dashboard and not to the link destination page. Starting now, a link to an email profile page now directs to the correct page after logging in, not to the dashboard.
AVSUPPORT-62312 Blocklist scrolling was not working when using 4k resolution.